RU2405868C2 - Method and apparatus for producing complex textured yarn - Google Patents

Abstract

FIELD: textile, paper. ^ SUBSTANCE: in implementation of the proposed method a few single yarns are made by extruding, cooling and pulling. Every single yarn consists of a number of monofilament yarns having the form of single strands and which are exposed to twisting together to produce a complex string, at the same time before twisting exposing monofilament yarns composed of many single filaments yarns individually to entangling. And at least one isolated yarn consisting of many monofilament yarns before twisting is exposed to repeated entangling on several preliminary stages. Also the device for implementation the method is proposed. The device comprises a moulding device, a cooling device and an exhaust apparatus for producing several separate yarns consisting of a number of monofilament yarns. The twisting device is intended to combine separate yarns into complex thread. The device for a single entangling of separate yarns is located in front of the twisting device. And the device for entangling has several consecutively located forwards single yarns of nodes for multiple entangling of at least one of a single yarn. ^ EFFECT: maximum high flexibility in varying colour scheme of a complex yarn from mixed-colour to full colour separation. ^ 23 cl, 6 dwg

Description

The present invention relates to a method for manufacturing a textured multifilament yarn according to the preamble of claim 1, and to a device for implementing this method according to the preamble of claim 12.

In the manufacture of a textured multifilament yarn in a single-stage process, first, by extrusion, cooling and drawing, several synthetic single yarns are made, each of which consists of a plurality of single-strand monofilaments (filaments). In this case, single yarns can be produced with different properties, preferably of different colors, by mixing of which, when combining single yarns into a complex yarn, its final coloring is determined. Depending on the purpose of the multifilament yarn, various requirements are imposed on its color scheme. In this case, single strands tend to be mixed together so that in the finished complex thread, firstly, the dominant allocation of individual single strands against the background of the remaining single strands is excluded, and secondly, there is no complete mixing of single strands. It is the dominant allocation of a single yarn of the same color against the background of the remaining single yarns in the multifilament yarn that is too long along its length can lead to the appearance of the so-called “flamme” effect, which occurs when there are long single-color plots in the multifilament yarn. However, in most cases, such a flamme effect is desired.

From EP 0485871 A1 there is known a method and apparatus for manufacturing a multicolor multifilament yarn, which has proven itself primarily in the production of so-called three-color yarns in the carpet industry. At the same time, single filaments consisting of many monofilaments are subjected to crimping (texturing) together to obtain a complex filament. For this, single filaments are jointly fed (pressed) by a feeding device into a heat chamber. In a heat chamber, monofilaments of single threads are laid in loops and turns, forming the total compressed mass of the thread. In this way, firstly, monofilament is twisted, and secondly, single strands are mixed together. For a certain separation of colors in a multifilament yarn, each of the single yarns is individually subjected to a pneumatic connection before they are crimped together, resulting in weaving or entanglement of the monofilaments of one single yarn, resulting in a partial compactification of the yarn. In this way, it was possible to improve the mixing of single yarns in a complex yarn and to achieve a clearer separation of colors in it. In practice, there is a need for multifilament yarns with different colors, for which multifilament yarns can be produced either in a mixed color, which is obtained by intensively mixing multi-colored single yarns, or with a clear color separation, which is achieved with low-intensity mixing of single yarns.

From EP 0874072 A1, a method and a device for producing a multifilament yarn are known, before combining into which single yarn is individually subjected to pneumatic connection and individually subjected to crimping. However, a fundamental disadvantage of this method is the too obvious separation of single yarns in a complex yarn, which is undesirable in order to avoid the appearance of the "flamme" in the carpet. Another disadvantage of this known method is the need to crimp each single thread separately from other single threads, which requires exceptionally high hardware costs. For this reason, the complexity of controlling a multi-line installation increases many times.

From DE 4202896 A1 another method and another device for producing a multifilament yarn are known, in the manufacture of which single yarn is subjected to false twist before being fed into the crimping device. At the same time, however, there is a danger of too single single strands separating in the multifilament yarn from other single strands, and thereby violating the crimp effect of single strands.

Based on the foregoing, the present invention was based on the task of improving the method and device of the type indicated at the beginning of the description, providing the highest possible flexibility in varying the color design of the multifilament yarn from mixed color up to the complete separation of colors.

Another objective of the invention was to provide reproducible color control of the complex yarn.

This problem is solved according to the invention using the method claimed in claim 1, and using the device claimed in claim 12.

Various preferred embodiments of the invention are presented in the respective dependent claims.

The invention is based on the fact that the pneumatic connection of single threads, consisting of many monofilaments, can be used to obtain completely different results. So, in particular, the pneumatic connection of a single thread consisting of many monofilaments can be used to mix its monofilaments or to form knots on them. In this way, the degree of compactness of the thread is set, which (compactness) is basically consistent also with the specific stage of processing of the thread. In this case, the invention provides for multiple pneumatic connection of at least one of the single threads, consisting of many monofilaments. Thus, all stages of processing, specially carried out up to the winding of single threads, can be performed with individually specified parameters of the pneumatic connection to give the thread compactness. To do this, at least one of the single threads, consisting of many monofilaments, before crimping, is subjected to pneumatic connection in several preliminary stages. Another advantage of the invention lies in the possibility of maintaining the stage of joint texturing of single yarns with their combination into a multifilament yarn. Flexibility in varying the color design of a complex thread is ensured thanks to the multiple pneumatic connection of single threads alone. So, in particular, to obtain a complex filament with a pronounced separation of colors in it, each of the single strands can be subjected to pneumoconnection at several preliminary stages. In order to obtain a complex yarn with the effects of mixed colors, it is preferable to subject the pneumatic compound at several preliminary stages to only one of the single yarns consisting of many monofilaments.

In one embodiment of the method of the invention, each of the multiple filaments of single filaments is separately subjected to a pneumatic connection at the first preliminary stage before drawing out, which makes it possible for single filaments to enter the exhaust device with a high smoothness of their movement and at a small distance from each other. In this case, the parameters of the pneumatic connection of single strands at the first preliminary stage can be oriented solely to giving the single strands the optimum compactness for stretching them.

To obtain a multifilament yarn with special mixing or, on the contrary, color separation, it is preferable to use another embodiment of the method according to the invention, in which at least one of the single yarns or all single yarns are individually subjected to pneumatic coupling in the second preliminary stage after drawing. At the same time, the degree of compactness of single threads attached to them by means of pneumatic connection can be oriented only to subsequent joint winding of single threads.

The possibilities and range of color control of the complex filaments can also be expanded further by subjecting the single filaments to the pneumatic connection at least at one of the preliminary stages with different set pressure values of the compressed air supplied. In this way, it is possible, in particular, to subject the parallel moving single strands to a pneumatic connection with varying degrees. If it is necessary, for example, to obtain a multifilament yarn, in the colors of which, along with one dominant color, a second color component must also be present in the form of a mixed color, a single color-determining thread can be subjected to pneumatic connection with compressed air supplied under relatively high pressure. At the same time, the set pressure level of compressed air should be considered proportional to the number of weaving nodes formed in a single thread.

In another embodiment, it is also possible to subject single strands to a pneumatic connection at preliminary stages with predetermined pressure values of the supplied compressed air on each of them. So, in particular, for pulling the threads requires less compactness to avoid problems with the individual pulling of monofilaments. For joint winding of single threads, it is advisable to subject them to a pneumatic connection with an intensity that makes it possible to obtain a complex thread with the desired color.

Similarly, in the second preliminary stage, the single strands can also be subjected to pneumatic connection, for example, with a pulsation of the pressure of the supplied compressed air to vary in this way by mixing colors. In this way, you can get variegated complex yarns with special optical effects.

To intensify the process of pneumatic connection of single threads before twisting them, it is most expedient to use another embodiment of the method proposed in the invention, in which single threads consisting of many monofilaments are subjected to pneumatic connection with heated compressed air. However, in another embodiment, it is also possible to heat the single strings consisting of a plurality of monofilaments themselves before their pneumoconnection. The pneumatic connection of single strands in a heated state allows one to influence both the parameters of the weaving of their constituent monofilaments and the crimping parameters of the complex filament.

In order to be able to control the tension of single threads, which is extremely important for crimping them, regardless of the tension of single threads at the previous stage of their pneumatic connection, the embodiment of the method according to the invention is preferred, in which single threads are passed several turns along a disk unit and subjected to pneumatic connection on a part of turns before leaving the disk node.

The use of heated spinning disks at the same time also makes it possible to efficiently carry out thermostatic pneumatic connection of a single thread.

In order to give the multifilament yarn the compactness necessary for its subsequent processing, the multifilament yarn is subjected to pneumatic compaction after crimping single filaments and before being wound on the package, after which the multifilament yarn basically retains its color obtained by pneumatically connecting single filaments at preliminary stages and by their subsequent crimping.

The method of the invention is most suitable for the manufacture of a multifilament yarn formed from several, preferably different, single yarns. However, the invention is not limited to the manufacture of complex yarns only from single yarns with different properties, since mainly individual pretreatment of single yarns can equally effectively be used in the manufacture of complex yarns from identical single yarns. In this case, the structural features of single threads, which (structural features) can be varied by conducting preliminary pneumoconnection of single threads at two stages with different parameters on each of them, are of paramount importance.

The method proposed in the invention is also suitable for joint pneumoconnection of all single threads in the second preliminary stage after their pneumoconnection separately in the first preliminary stage. Due to the multi-stage pneumatic connection of single threads before texturing, the method of the invention provides extremely high flexibility for varying the mode and parameters of the preliminary processing of single threads before texturing. Thus, in particular, single strands can also be pneumatically connected together in the first preliminary stage and individually in the second preliminary stage.

In addition, the scope of the method proposed in the invention is not limited to the manufacture of complex yarns by co-crimping all single yarns. In principle, each of the single yarns can also be individually textured before being knitted into a multifilament yarn. In this case, another embodiment of the method according to the invention is possible, in which, after joint or individual texturing of single strands and combining them into a complex thread, it is again divided into separate threads after cooling, which are then subjected to pneumatic connection into the final complex thread wound at the end for packing. This embodiment of the method according to the invention can be used for the manufacture of multifilament yarn from differently colored single yarns and thereby allows the color design of the multifilament yarns to be further varied.

The invention also provides a device for implementing the method of the invention, having a device for pneumatic connection, formed by several nodes for pneumatic connection, sequentially located in the direction of movement of single threads.

In order to be able to carry out intermediate stages of processing single threads between separate stages of their pneumatic connection, in one of the preferred embodiments of the device according to the invention, a first pneumatic connection unit is located in front of the exhaust device, having one for each pneumatic connection device for pneumatic connection.

The second node for pneumatic connection with several devices for pneumatic connection is preferably located between the exhaust device and the crimping device.

For the possibility of pneumatic connection of single strands at separate preliminary stages at different preset values of the compressed air pressure, a pressure pneumatic line with an adjustable pressure of compressed air in it was connected to each device for pneumatic connection. In this case, the pressure pneumatic line can supply several devices for pneumatic connection with compressed air at the same time or can be used to separately supply one device for pneumatic connection with compressed air.

In order to preserve the special effects obtained during thermal pneumatic connection of threads, in yet another embodiment of the device according to the invention, at least one of its nodes for pneumatic connection can be equipped with a compressed air heater.

However, in another embodiment, it is also possible to provide a heating device in front of the pneumatic connection unit, which enables heating of single strands.

For independent regulation of the tension of single threads during crimping and during pneumatic connection, it is preferable to use the device proposed in the invention, in which the exhaust device has a disk unit located in front of the crimping device, through which single threads are passed in several turns and to which pneumatic connection devices that are part of the second are functionally connected node for pneumatic connection, so that it is possible pneumatic connection of single threads before they leave the disc th node.

With the arrangement of devices for pneumatic connection, forming the second node for pneumatic connection, between two spinning disks on the last turn of the single strands enveloping them, it is possible to reduce the tension of single strands for their subsequent pneumatic connection by performing at least one of the spinning discs of the disk unit with a stepwise reduced diameter in that parts where single threads go off a disk node. In principle, however, for the possibility of pneumatic connection of single threads in the second preliminary stage, the device for pneumatic connection can be placed between two spinning disks on any turn of the single strands enveloping them.

To create additional thermal effects during pneumatic connection of monofilaments in a preferred embodiment of the device according to the invention, a disk unit formed by two rotatable spinning disks, at least one of which is made heated, can be used in it.

In order to finally give the multifilament yarn compactness between the crimping device and the take-up / winding device designed for winding the multifilament yarn onto the package, a pneumatic compacting device for the multifilament yarn is located.

In addition, in order to ensure intense and uniform winding of single strands, it is most preferable to use another embodiment of the device according to the invention, in which the crimping device is formed by a feeding device and a heat chamber functionally connected with it. In such a heat chamber, single filaments are jointly fed by a feeding device and pressed into it into a pressed mass.

Below, the invention proposed in the invention is described in more detail by the example of some embodiments of the device of the invention proposed for its implementation with reference to the accompanying drawings, which show:

figure 1 is a schematic view made in the first embodiment of the proposed invention, the device is designed to implement the proposed invention the method,

figure 2 is a schematic view made in another embodiment proposed in the invention device,

figure 3 is a schematic view of a modification proposed in the invention of a device made according to the embodiment shown in figure 1,

figure 4 is a schematic view of a modification proposed in the invention of a device made according to the embodiment shown in figure 2,

figure 5 is a schematic view of a modification proposed in the invention of a device made according to the embodiment shown in figure 1 or 2, and

figure 6 is a schematic view made in one of the options for separating thread guide.

Figure 1 schematically shows the device of the invention according to the first embodiment for implementing the method of the invention. Such a device has a molding device 1 connected to one or more melters (not shown). The molding device has a heated spinning beam 2 with several dies 3.1-3.3 placed on it in a row. Each of the dies 3.1-3.3 from its lower side has many spinning holes through which the polymer melt flows supplied to each die 3.1-3.3 are extruded under pressure to form many individual monofilaments. Under the molding device 1, there is a cooling device 4 through which individual extruded monofilaments are passed and cooled, the temperature of which immediately after leaving the dies is approximately equal to the melting temperature. In this case, the cooling device 4 can be formed, for example, by a blow shaft, through which a stream of cooling air is blown in a direction substantially transverse to the monofilament. After cooling the monofilaments, each of them formed by one of the spinnerets 3.1, 3.2 and 3.3 of the beams 13.1, 13.2 and 13.3 is combined at the outlet of the cooling device 4 into one single thread 6.1, 6.2, respectively 6.3.

For this purpose, a preparation device 7 is provided at the output of the cooling device 4, as well as thread guides 5.1, 5.2 and 5.3, one for each of the single threads 6.1, 6.2 and 6.3.

For the removal of single strands 6.1, 6.2 and 6.3 from the dies 3.1, 3.2 and 3.3, an exhaust device 10 is provided with at least one disk unit 18 (shown by a dashed line) with a receiving spinning disk. In this case, single threads 6.1, 6.2 and 6.3 pass in parallel through the exhaust device 10. In this case, single threads can be diverted together by one disk unit with a receiving spinning disk or individually by single receiving and feeding mechanisms.

After the removal and drawing out of single threads 6.1, 6.2 and 6.3 by the exhaust device 10, they are brought together in a crimping (corrugating) device 11 and combined into a complex thread 21.

In this embodiment, the crimping device 11 is formed by the feeding device 15 and the heat chamber 16 interacting with it. The feeding device 15 is connected to a pressure source (not shown), which supplies the feeding medium to the feeding device 15. Single yarns 6.1, 6.2 and 6.3 are drawn into the feeding device 15 by the supply medium and then pressed into the heat chamber 16 to form a compressed mass. In this case, partial mixing or melting of single threads 6.1-6.3 occurs. Next, the mass 22 of the filament pressed under the action of the hot feed medium enters the cooling drum 17 and is cooled on it.

For pretreatment of single strands 6.1-6.3 between the preparation device 7 and the exhaust device 10, the first node 8.1 for pneumatic connection is located, and between the exhaust device 10 and the cooling device 4 is located the second node 8.2 for pneumatic connection. The first node 8.1 for pneumatic connection has several devices 9.1, 9.2 and 9.3 for pneumatic connection of single threads 6.1, 6.2 and 6.3, one for each of them. Each of the devices 9.1, 9.2 and 9.3 for pneumatic connection has a thread guide channel through which a single thread is passed. A pressure channel terminates laterally in the thread guide channel for supplying a high pressure fluid, preferably compressed air, to the thread guide channel. The discharge channels are connected by a pressure pneumatic line 12.1 and a pressure regulator 14.1 with a pressure source. To regulate the pressure of compressed air, the pressure regulator 14.1 is connected to a control device 24.

The design of devices 9.1, 9.2 and 9.3 for pneumatic connection is known in principle and described, for example, in DE 102004007073 A1.

The second assembly 8.2 for pneumatic connection located in front of the crimping device 11 also has several devices for pneumatic connection indicated by positions 9.4-9.6. The design of devices 9.4-9.6 for pneumatic connection in the second node 8.2 for pneumatic connection is basically identical to the design of devices 9.1-9.3 for pneumatic connection in the first node 8.1 for pneumatic connection. Instruments 9.4-9.6 for pneumatic connection are connected by a pressure pneumatic line 12.2 and a pressure regulator 14.2 with a pressure source not shown in the drawing. The pressure regulator 14.2 for setting and changing the pressure of the compressed air is connected to the control device 24. Thus, the nodes 8.1 and 8.2 for pneumatic connection of single threads 6.1-6.3 can work independently of each other.

For the subsequent processing of the textured complex yarn 21 formed by single threads 6.1-6.3, a pneumatic compacting device 19 is installed behind the crimping device 11. When passing through this pneumatic compacting device 19, the complex thread 21 is subjected to the last processing necessary for its further processing, which consists in giving the thread compactness.

After pneumocompacting, the multifilament yarn 21 is received by a take-up / winding device 20 and wound onto a package 23.

The take-up and winding device 20 simultaneously performs the function of a pulling device necessary for drawing the textured multifilament yarn 21 from the pressed mass 22 of the yarn. In order to be able to control the tension of the multifilament yarn 21 during winding and pneumocompacting, the multifilament yarn 21 can also be pulled from the pressed mass 22 by a receiving spinning disk and fed to the receiving-winding device 20 with an additional disk unit located after the pneumocompacting device 19. However, the specific implementation of the devices in the zone of the subsequent processing of the thread is not significant for the method proposed in the invention, and therefore, in this part, any devices and processing steps of the complex thread 21 can be used up to its winding on the package 23.

In the embodiment of the device according to the invention shown in FIG. 1, three beams 13.1, 13.2 and 13.3 are formed from multiple plies of monofilament in the form of single veins and run in parallel with each other by dies 3.1, 3.2 and 3.3. The bundles 13.1, 13.2 and 13.3 of monofilaments have different properties, preferably they differ in color of the base polymer. In principle, however, monofilament bundles can also be made from different base polymers or from one base polymer, but with different additives.

Monofilaments of each of their bundles 13.1, 13.2 and 13.3 are combined into one single thread 6.1, 6.2, 6.3 respectively. For this, the monofilament of each of their bundles 13.1, 13.2 and 13.3 is processed by the preparative composition supplied to them by the preparatory device 7 and are combined by thread guides 5.1, 5.2 and 5.3 into the corresponding single threads.

For the subsequent processing of single strands 6.1-6.3, they at the first preliminary stage immediately after preparation undergo the first pneumatic connection in node 8.1 for pneumatic connection. For this, each of the single strands 6.1-6.3 is passed through a device 9.1-9.3 for pneumatic connection. At the same time, compressed air is supplied to node 8.1 for pneumatic connection with a pressure adjusted to a certain value, at which weaving of monofilaments forming a single thread is ensured. With such a pneumatic connection, firstly, a uniform distribution of the preparation composition is ensured, and secondly, the minimum compactness of a single thread is achieved, which is necessary for its subsequent wiring by the disk assembly in the exhaust device 10. When adjusting the pressure of compressed air, its pressure must be set to an amount that excludes too intense knot formation during pneumatic processing of monofilaments, united into single threads.

After receiving and pulling single strands 6.1-6.3, they are subjected to a second pneumatic connection in a node 8.2 for a pneumatic connection in the second preliminary stage. In node 8.2 for pneumatic connection, each single thread 6.1-6.3, separately from the others, is passed through one of the devices 9.4-9.6 for pneumatic connection and is subjected to pneumatic connection. The degree of interweaving of the monofilaments in each single yarn 6.1-6.3 is set such that, when texturing (crimping) single yarns 6.1-6.3 and obtaining complex yarn 21 from them, a certain mixing of the monofilaments forming each single yarn takes place. In this way, mainly in the manufacture of a multicolor textured multifilament yarn 21, its color can be varied within wide limits. So, for example, a complex thread 21 with a clear separation of colors can be obtained by setting a relatively high pressure of compressed air supplied to the second node 8.2 for pneumatic connection. This ensures intensive weaving of monofilaments of a single thread, which is almost impossible to eliminate even with its subsequent texturing. And vice versa, setting a relatively low pressure of compressed air supplied to the second node 8.2 for pneumatic connection allows you to get a complex thread 21 with a more or less uniform mixed color.

Upon completion of the pneumatic connection process in the second preliminary stage, single 6.1-6.3 threads are crimped together (corrugated) and combined into a complex thread 21. For this, single 6.1-6.3 threads are fed through a feeding device 15 by a supplying fluid to the adjacent heat chamber 16. In the heat chamber 16 monofilaments of single yarns 6.1-6.3 are laid in loops and coils, forming a pressed mass 22, which, after heat treatment, dissolves, forming a textured multifilament yarn 21. To give the multifilament yarn 21 compactness (collection) before wrapping it on the package 23 is subjected to pneumatic compaction in a pneumatic compacting device 19.

The inventive method and the inventive device make it possible, above all, to produce multicolor textured multifilament yarns with high uniformity of color. Moreover, if it is necessary to obtain complex yarns with various optical properties, special pretreatment modes can be set.

Figure 2 shows made in another embodiment proposed in the invention device for implementing the proposed invention the method. The device made according to this embodiment is basically identical to the device made according to the embodiment described above, and therefore only differences between them are discussed below. All elements and parts made according to the second embodiment of the device, identical in their function to the elements and parts made according to the first embodiment of the device, are indicated by the same positions.

In the embodiment shown in FIG. 2, the exhaust device 10 can be formed, for example, by two disk units 18 and 27. Each such disk unit is thus formed by two rotatable spinning disks or one rotatable spinning disk and one guide roller, however in In any case, single strands 6.1, 6.2 and 6.3 are simultaneously conducted along the spinning disks. Spinning disks of the disk units 18 and 27 are driven in rotation at different speeds, which allows the drawing of single strands 6.1-6.3.

To prepare single strands 6.1-6.3 for crimping in the second preliminary stage, between the exhaust device 10 and the crimping device 11 is located the second node 8.2 for pneumatic connection. This node 8.2 for pneumatic connection has several devices 9.4-9.6 for pneumatic connection. In this case, one of the single threads is passed through each device for pneumatic connection. Each device 9.4-9.6 for pneumatic connection is controlled independently of others. For this purpose, for each pneumatic connection device 9.4-9.6, its own pressure pneumatic line 12.3, 12.4, 12.5 with a pressure regulator 14.3, 14.4, 14.5 is connected to it. The pressure regulators 14.3-14.5 are connected to the control device 24, which allows you to adjust the compressed air pressure individually for each device 9.4-9.6 for pneumatic connections. It should be specially noted that the pressure regulators 14.3-14.5 are made with the possibility of complete overlapping of the corresponding pressure pneumatic lines. Due to this, high flexibility is provided during pretreatment of single threads 6.1-6.3 immediately before they are crimped.

The device for implementing the method of the invention shown in FIG. 2 thus has an even higher flexibility, which allows combining single strands 6.1-6.3 with different types of pneumatic connections to obtain a complex strand that creates a certain optical effect. So, in particular, in such a device it is possible to produce a multicolor complex thread, the appearance of which is determined by one pronounced separate color and the second mixed color. A similar optical effect can be obtained, for example, by subjecting one of the three single-stranded 6.1-6.3 dyes to a pneumatic connection at the second preliminary stage and without subjecting the remaining single threads to an additional pneumatic connection on it.

The device according to the invention, in the embodiments shown in FIGS. 1 and 2, can be equipped with additional means or their combinations to create special effects, primarily by preliminary texturing of single threads. So, for example, figure 3 shows a modification of the device according to the invention, made according to the variant shown in figure 1. Moreover, in FIG. 3 only the exhaust device 10, the assembly 8.2 for pneumatic connection, as well as the crimping device 11 are schematically shown. Since not shown, as well as the components of the device of the invention shown in this drawing, are basically identical to its components in that shown in FIG. 1 option, below are considered only the differences between the two options.

The knot 8.2 for pneumatic connection has for each of the single threads 6.1, 6.2 and 6.3 on the device 9.4, 9.5 and 9.6 for pneumatic connection. Devices 9.4-9.6 for pneumatic connections are connected by a pressure pneumatic line 12.2 and a pressure regulator 14.2 with a pressure source. In pressure pneumatic lines 12.2, a heater 26 is additionally provided, which pre-heats the fluid (compressed air) before it enters the devices 9.4-9.6 for pneumatic connection. The heater 26, as well as the pressure regulator 14.2 are connected to the control device 24.

In the embodiment shown in FIG. 3, the pneumatic connection of the single strands 6.1-6.3 in the second preliminary stage occurs under the influence of a heated fluid. Thanks to this, monofilaments of single threads are heated, which, on the one hand, affects the weaving of monofilaments, and on the other hand, intensifies the twisting of threads. Preliminary weaving of monofilaments in single threads is mainly preserved at the stages of subsequent processing.

In Fig.4 shows a modification of the depicted fragmented proposed in the invention device made according to the embodiment shown in Fig.2. Moreover, the technological units of this device of the invention not shown in the drawing are basically identical to its technological units in the embodiment described above and therefore are not considered again. FIG. 4 shows, in particular, an exhaust device 10, a pneumatic connection unit 8.2 and a crimping device 11. The exhaust device 10 is formed by a first disk unit 18 with receiving spinning disks and a second disk unit 27 with exhaust spinning disks. Each of the disk nodes 18 and 27 has two spinning disks, repeatedly enveloped by single strands 6.1-6.3. The spinning disks 28.1 and 28.2 of the disk assembly 27 are made heated and thereby ensure the heating of single strands 6.1-6.3 conducted along their peripheral periphery. Between the heated spinning discs 28.1 and 28.2 there is a node 8.2 for pneumatic connection. Such a node 8.2 for pneumatic connection is identical in this case to a node for pneumatic connection in the embodiment shown in FIG. 2 and, in accordance with this, has one device for pneumatic connection for each of the single strands 6.1-6.3. Node 8.2 for pneumatic connection is located between the spinning disks 28.1 and 28.2 on one of the turns of single strands enveloping them. So, for example, the node 8.2 for pneumatic connection can be located on the last turn of the envelope spinning disks of single strands 6.1-6.3.

After leaving the last heated spinning disk 28.1, the single strands 6.1-6.3 together enter the crimping device 11 and are pressed into the pressed mass 22.

In the embodiment of the device according to the invention shown in FIG. 4, firstly, the heated single thread can be pneumatically connected, and secondly, the tension of single threads can be adjusted for texturing them in the crimping device 11 regardless of the tension of single threads for pneumatic connection on second preliminary stage. So, for example, the heated spinning disk 28.1 can also be performed with a stepwise decreasing diameter to create in this way a certain tension of single strands before their pneumatic connection. That part 33 of the spinning disk 28.1, which is made of a stepwise reduced diameter on the last turn of the single strands enveloping it, is shown in Fig. 4 by a dashed line and is located directly behind the node 8.2 for pneumatic connection. Another advantage of the embodiment shown in FIG. 4 is to provide a strictly defined vanishing point for single strands from spinning disks 28.1. Single filaments with a high smoothness of their movement come from the last spinning disks into a crimping device.

In the embodiment of the device according to the invention shown in FIG. 4, in another preferred embodiment, unheated spinning disks can also be used, in which case the pneumatic connection of single strands will occur at ambient temperature.

Figure 5 shows another embodiment of the device according to the invention, which, for example, can be used to implement the method according to the invention, alternatively to the variants shown in figures 1 and 2.

In the embodiment shown in FIG. 5, between the cooling drum 17 and the winding device 20, a first receiving spinning disk 29.1 separating the thread guide 30, a pneumatic compacting device 19 and a second receiving spinning disk 29.2 are arranged. In front of the cooling drum 17, aggregates, units and parts can be located that are identical in design to those provided for in the embodiments shown in FIGS. 1 and 2 and above.

In the embodiment shown in FIG. 5, the multifilament yarn 21, after being crimped and cooled on the circumferential surface of the cooling drum 17, is received from it by the first receiving spinning disk 29.1. In this case, the receiving spinning disk 29.1 is made in the form of a spinning disk driven into rotation with a single idler working with it in pair. For further processing, the multifilament yarn 21 is divided into single yarns 6.1, 6.2 and 6.3. For this purpose, single filaments 6.1, 6.2 and 6.3 are passed through the separating thread guide 30 before they enter the pneumatic compacting device 19. In the pneumatic compacting device 19, the single filaments 6.1, 6.2 and 6.3 separately fed into it are again subjected to pneumatic connection and are combined into a complex thread 21. This the multifilament yarn 21 is received by the take-up spinning disk 29.2 and enters the take-up and winding device 20. In the take-up and winding device 20, the complex thread 21 is wound onto the package 23. Separation of the complex thread before osleduyuschey treatment can further create special optical effects. In this case, before subsequent processing, at least one of the single threads after separation of the multifilament yarn into them can be subjected to additional processing by a pneumatic compound.

In the embodiment shown in FIG. 5, the multifilament yarn 21 is divided into single yarns 6.1, 6.2 and 6.3. For this, it is preferable to use a separating thread guide 30, preferably made according to the embodiment shown in FIG. 6. The separating thread guide 30 is a disk-shaped part 32, which is attached to the bed with one side thereof. Around the circumference of the disk-shaped part 32 with a certain angular pitch there are several thread guide eyes 31.1, 31.2 and 31.3. In the embodiment of FIG. 6, these thread guide eyes 31.1, 31.2 and 31.3 form the vertices of an equilateral triangle. In the thread guide eyes 31.1, 31.2 and 31.3, ceramic inserts are preferably provided. The use of such a thread guide allows you to individually enter single threads 6.1, 6.2 and 6.3 in the embodiment shown in figure 5 in the pneumatic compacting device 19.

The above-described embodiments of the inventive device for implementing the inventive method are only possible examples of the layout and selection of processing devices. So, for example, for additional processing of single yarn before texturing or complex yarn after texturing, or for other additional processing of complex yarn, you can provide additional stages of preliminary or subsequent processing and the corresponding means. Likewise, both the features and the design of the crimping device discussed in the description are illustrative. To obtain certain crimping characteristics, each single thread can also be textured with parameters different from the textured parameters of the remaining single threads. When separately twisting single yarns, you can also use different texturing methods for the subsequent combination of textured single yarns into one complex yarn. The number of single threads indicated in the above embodiments of the device of the invention is also selected as an example. Thus, in particular, a multifilament yarn can be made from at least two single yarns or several single yarns.

Claims (23)

1. A method of manufacturing a textured multifilament yarn, in which several single strands are made by extrusion, cooling and drawing, each of which consists of a plurality of single strands of monofilaments and which are jointly crimped to form a multifilament yarn, before being crimped consisting of multiple monofilaments single filaments individually pneumatic connection, characterized in that at least one of multiple filaments of single filaments in front of stallation of multiple air-entangled subjected to several preliminary stages. 2. The method according to claim 1, characterized in that each of the multiple filaments of single filaments is separately subjected to pneumatic connection at the first preliminary stage before drawing. 3. The method according to claim 1, characterized in that at least one of the single strands or all of the single strands are individually subjected to pneumatic connection in the second preliminary stage after drawing. 4. The method according to claim 1, characterized in that the single strands are subjected to pneumatic connection at least one of the preliminary stages with different set pressure values of the supplied compressed air. 5. The method according to one of claims 1 to 4, characterized in that the single strands are subjected to pneumatic connection in the preliminary stages with predetermined pressure values of the supplied compressed air on each of them. 6. The method according to claim 5, characterized in that the pressure value of the supplied compressed air for pneumatic connection of single threads before drawing is set less than the pressure value of the supplied compressed air for pneumatic connection of single threads after drawing. 7. The method according to one of claims 1 to 4, characterized in that the single filaments consisting of a plurality of monofilaments are subjected to crimping with heated compressed air at least in one of the preliminary stages. 8. The method according to one of claims 1 to 4, characterized in that the single filaments consisting of a plurality of monofilaments are subjected to heating in at least one of the preliminary stages immediately before the crimp connection. 9. The method according to one of claims 1 to 4, characterized in that the single strands are passed through several turns in a disk unit before crimping and are subjected to pneumatic connection on a part of the turns before leaving the disk unit. 10. The method according to claim 9, characterized in that the single strands are passed through a disk unit with at least one heated spinning disk. 11. The method according to one of claims 1 to 4, characterized in that the multifilament yarn is subjected to pneumatic compaction after winding single strands and before winding onto the package. 12. A device for implementing the method according to one of claims 1 to 11, having a molding device (1), a cooling device (4) and an exhaust device (10) for the manufacture of several single threads consisting of many monofilaments (6.1, 6.2, 6.3), a crimping device (11) for combining single threads (6.1, 6.2, 6.3) into a multifilament thread (21) and a device (8.1, 8.2) located in front of the crimping device (11) for a separate pneumatic connection of single threads (6.1, 6.2, 6.3), characterized the fact that the device for pneumatic connection is somewhat sequentially located nnyh forward facing strands (6.1, 6.2, 6.3) of nodes (8.1, 8.2) for multiple air-entangled at least one of the strands (6.1, 6.2, 6.3). 13. The device according to claim 12, characterized in that in front of the exhaust device (10) is the first node (8.1) for pneumatic connection, having one for each of the single threads (6.1, 6.2, 6.3) to the device (9.1, 9.2, 9.3) for pneumatic connection. 14. The device according to item 12 or 13, characterized in that after the exhaust device (10) there is a second node (8.2) for pneumatic connection, having several devices (9.4, 9.5, 9.6) for pneumatic connection. 15. The device according to claim 13, characterized in that one pressure pneumatic line (12.1) with an adjustable pressure of compressed air in it is connected to the devices (9.1, 9.2, 9.3) for the pneumatic connection that make up the first node (8.1) for the pneumatic connection. 16. The device according to item 13, characterized in that to the devices (9.4, 9.5, 9.6) for pneumatic connections that make up the second node (8.2) for pneumatic connections, several pressure lines are connected (12.1, 12.4, 12.5) with individually adjustable in each of them with compressed air pressure. 17. The device according to item 12 or 13, characterized in that at least one of the nodes (8.1, 8.2) for pneumatic connection is equipped with a heater (26) of compressed air. 18. The device according to item 12 or 13, characterized in that at least one of the nodes (8.1, 8.2) for pneumatic connection is equipped with a heating device (28.1, 28.2) for the possibility of heating single threads (6.1, 6.2, 6.3). 19. The device according to item 12 or 13, characterized in that the exhaust device (10) has a disk unit (27) located in front of the crimping device (11), through which single threads (6.1, 6.2, 6.3) are passed in several turns and with which functionally connected devices (9.4, 9.5, 9.6) for pneumatic connections that make up the second node (8.2) for pneumatic connections, so that it is possible to pneumatically connect single threads (6.1, 6.2, 6.3) before they leave the disk unit (27). 20. The device according to claim 19, characterized in that the disk unit (27) is formed by two rotatable spinning disks (28.1, 28.2), at least one of which has a part (33) located after the node (8.2) for pneumatic connection stepwise reduced diameter. 21. The device according to claim 19, characterized in that the disk unit (27) is formed by two rotatable spinning disks (28.1, 28.2), at least one of which is made heated. 22. The device according to item 12 or 13, characterized in that after the crimping device (11) there is a receiving-winding device (20) for winding the multifilament yarn (21), and between the crimping device (11) and the receiving-winding device (20) ) there is a device (19) for pneumocompacting a complex thread (21). 23. The device according to item 12 or 13, characterized in that the crimping device (11) is formed by a feeding device (15) and a heat chamber functionally connected with it (16), into which single threads (6.1, 6.2, 6.3) are jointly fed by a feeding device (fifteen).

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